| East Islip to Oerlinghausen | 3,768.72 mi (6,065.16 km) |
| East Islip to Oestrich-Winkel | 3,796.00 mi (6,109.07 km) |
| East Islip to Offenburg | 3,836.81 mi (6,174.75 km) |
| East Islip to Oftersheim | 3,837.66 mi (6,176.11 km) |
| East Islip to Ohrdruf | 3,882.02 mi (6,247.51 km) |
| East Islip to Ohringen | 3,880.04 mi (6,244.32 km) |
| East Islip to Olbernhau | 3,989.28 mi (6,420.12 km) |
| East Islip to Olching | 3,984.78 mi (6,412.88 km) |
| East Islip to Oldenburg | 3,720.13 mi (5,986.98 km) |
| East Islip to Oldenburg in Holstein | 3,790.72 mi (6,100.58 km) |
| East Islip to Olfen | 3,724.79 mi (5,994.47 km) |
| East Islip to Olpe | 3,761.35 mi (6,053.30 km) |
| East Islip to Olsberg | 3,778.19 mi (6,080.40 km) |
| East Islip to Oranienburg | 3,922.52 mi (6,312.68 km) |
| East Islip to Ortenberg | 3,828.66 mi (6,161.63 km) |
